Investigation the Effect of Human Recombinant Epidermal Growth Factor on Rotator Cuff Healing: An Experimental Model.

Objective To investigate the effectiveness of human recombinant epidermal growth factor in the healing of rotator cuff tear in the rabbit shoulder. Methods Rotator cuff tears (RCTs) were experimentally created on both shoulders of 20 New Zealand rabbits. The rabbits were divided into the following groups: RCT (sham group; n = 5), RCT + EGF (EGF group; n = 5), RCT + transosseous repair (repair group; n = 5), and RCT + EGF + transosseous repair (combined repair + EGF group; n = 5). All rabbits were then observed for 3 weeks, and biopsies were taken from the right shoulders in the third week. After three more weeks of observation, all rabbits were sacrificed, and a biopsy removed from their left shoulders. All biopsy material was stained with haematoxylin & eosin (H&E) and vascularity, cellularity, the proportion of fibers and the number of fibrocartilage cells were evaluated under light microscope. Results The highest collagen amount and the most regular collagen sequence was detected in the combined repair + EGF group. The repair group and the EGF group showed higher fibroblastic activity and capillary formation when compared with the sham group, but the highest fibroblastic activity and capillary formation with highest vascularity was detected in the combined repair + EGF group ( p < 0.001). EGF seems to improve wound healing in the repair of RCT. The EGF application alone, even without repair surgery, seems to be beneficial to RCT healing. Conclusion In addition to rotator cuff tear repair, application of human recombinant epidermal growth factor has an effect on rotator cuff healing in rabbit shoulders.

Investigation the Effect of Human Recombinant Epidermal Growth Factor on Rotator Cuff Healing: An Experimental Model / Investigação do efeito do fator de crescimento epidérmico recombinante humano na cicatrização do manguito rotador: Um modelo experimental

Abstract Objective To investigate the effectiveness of human recombinant epidermal growth factor in the healing of rotator cuff tear in the rabbit shoulder. Methods Rotator cuff tears (RCTs) were experimentally created on both shoulders of 20 New Zealand rabbits. The rabbits were divided into the following groups: RCT (sham group; n = 5), RCT + EGF (EGF group; n = 5), RCT + transosseous repair (repair group; n = 5), and RCT + EGF + transosseous repair (combined repair + EGF group; n = 5). All rabbits were then observed for 3 weeks, and biopsies were taken from the right shoulders in the third week. After three more weeks of observation, all rabbits were sacrificed, and a biopsy removed from their left shoulders. All biopsy material was stained with haematoxylin & eosin (H&E) and vascularity, cellularity, the proportion of fibers and the number of fibrocartilage cells were evaluated under light microscope. Results The highest collagen amount and the most regular collagen sequence was detected in the combined repair + EGF group. The repair group and the EGF group showed higher fibroblastic activity and capillary formation when compared with the sham group, but the highest fibroblastic activity and capillary formation with highest vascularity was detected in the combined repair + EGF group (p < 0.001). EGF seems to improve wound healing in the repair of RCT. The EGF application alone, even without repair surgery, seems to be beneficial to RCT healing. Conclusion In addition to rotator cuff tear repair, application of human recombinant epidermal growth factor has an effect on rotator cuff healing in rabbit shoulders.

Resumo Objetivo Investigar a eficácia do fator de crescimento epidérmico (EGF) recombinante humano na cicatrização da lesão do manguito rotador no ombro de coelhos. Métodos As rupturas do manguito rotador (RMRs) foram criadas experimentalmente em ambos os ombros de 20 coelhos Nova Zelândia. Os coelhos foram divididos nos seguintes grupos: RMR (grupo controle; n = 5), RMR + EGF (grupo EGF; n = 5), RMR + reparo transósseo (grupo reparo; n = 5) e RMR + EGF + reparo transósseo (grupo reparo combinado+ EGF; n = 5). Todos os coelhos foram observados por 3 semanas, e amostras de biópsias foram coletadas do ombro direito na 3ª semana. Após mais 3 semanas de observação, todos os coelhos foram submetidos à eutanásia, e uma amostra de biópsia foi coletada dos ombros esquerdos. Todo o material de biópsia foi corado com hematoxilina e eosina (H&E) para avaliação de vascularidade, celularidade, proporção de fibras e número de células fibrocartilaginosas à microscopia óptica. Resultados O grupo reparo combinado + EGF apresentou a maior quantidade e a sequência mais regular de colágeno. O grupo reparo e o grupo EGF apresentaram maior atividade fibroblástica e formação capilar em comparação ao grupo controle, mas a maior atividade fibroblástica e a formação capilar com maior vascularidade foram detectadas no grupo reparo combinado + EGF (p < 0,001). O EGF parece melhorar a cicatrização da ferida no reparo da RMR. A aplicação isolada de EGF, mesmo sem cirurgia reparadora, parece melhorar a cicatrização da RMR. Conclusão Além do reparo da RMR, a aplicação de EGF recombinante humano auxilia a cicatrização do manguito rotador dos ombros de coelhos.

Does the Type of Surgical Technique and the Use of Prophylactic Antibiotics Affect the Clinical Results in Symptomatic Ingrown Toenail Patients?

Ingrown toenails are a common reason for referral to orthopedics and podiatry clinics. Recurrence and infection are common complications in ingrown toenail surgery. This study investigates the effect of an electrocautery matrixectomy on the recurrence and clinical outcomes in the Winograd technique applied in ingrown toenail surgery and whether prophylactic antibiotic use is necessary for these surgeries. One hundred forty-three patients who underwent surgery for ingrown toenails were analyzed retrospectively. Eighty-two patients underwent the Winograd procedure with electrocautery matrixectomy, whereas 61 patients underwent the Winograd procedure. While 78 patients were given prophylactic antibiotics, 65 patients were not. Patient satisfaction was evaluated with a surgical satisfaction questionnaire (SSQ). A visual analog score was used to evaluate the pain. Recurrence was observed in 3 toenails in the Winograd and electrocautery groups, while recurrence was observed in 9 toenails in the Winograd group (P = .018). In both groups, there was no statistically significant difference between the infection rates between patients who took antibiotics and those who did not (P > .05). There was no statistically significant difference between the groups in terms of SSQ scores (P > .05). It was observed that the surgery performed had a positive effect on pain, and this effect was statistically highly significant in both groups (P < .05). The outcomes of the present study suggest that the addition of an electrocautery matrixectomy to the Winograd technique in the surgical treatment of symptomatic Ingrown toenails may decrease recurrence rates. Additionally, this study showed that oral antibiotics, when used in addition to Ingrown toenail surgery, do not reduce postoperative morbidity.

Is electromagnetic guidance system superior to a free-hand technique for distal locking in intramedullary nailing of tibial fractures? A prospective comparative study.

BACKGROUND: Intramedullary nailing (IMN) technique is the gold standard for the treatment of closed fractures of the lower extremity long bones. For orthopedic surgeons, one of the most important problems in IMN procedures is the fixation of distal locking screws (DLS). Accurate and rapid placement of DLSs with minimal radiation exposure is crucial. In this study, we aimed to compare the results of two different distal locking methods concerning surgery duration and radiation exposure in patients who underwent osteosynthesis of tibia fractures with IMN. METHODS: In this prospective study, the results of 56 patients who met the inclusion and exclusion criteria from 72 patients were evaluated. Patients were divided into two groups according to the distal screwing method. Group 1 (n=29) comprised patients who used free-hand technique (FHT) for distal locking, while Group 2 (n=27) consisted of patients who used electromagnetic guidance system (EMGS) for distal locking. Demographic and medical data of the patients, duration of surgery time, amount of bleeding, total fluoroscopy counts, the time elapsed for distal locking, the measure of radiation exposure, number of attempts for distal screw locking, incorrect screw placements, complications and follow-up time were recorded. The groups were compared concerning demographic data and clinical results. RESULTS: There was no statistically significant difference between the groups about gender and side (p=0.928 and p=0.432, respectively). The mean age in Group-1 was higher than that of Group-2, and the difference was statistically significant (p=0.012). However, there was no statistically significant difference in length of hospital stay in Group-1 (p=0.140). On the other hand, in Group-2, the number of distal shots, fluoroscopy duration, effective radiation dose and operation duration were lower compared to Group-1, although this difference was not statistically significant (p=0.057, 0.073, 0.058 and 0.056, respectively). Failure was encountered in distal locking during the first attempt in three cases in Group-1 and in two cases in Group-2. Aseptic nonunion was observed in one patient in both groups. CONCLUSION: Both the FHT distal screwing technique and the EMGS distal screwing technique are highly effective methods for distal locking. The duration of operation, the duration of the fluoroscopy and radiation exposure were similar. FHT can be preferred for distal locking in conventional intramedullary nail applications, as it is effective, easy and inexpensive.

Clinical, radiological and patient-reported outcomes in intra-articular calcaneal fractures: Comparison of conservative and surgical treatment.

OBJECTIVES: This study aims to compare the radiological, clinical and patient-reported outcomes of patients with intra-articular calcaneus fractures treated conservatively or surgically. PATIENTS AND METHODS: Fifty-four patients (30 males, 24 females; mean age 41.0 years; range, 18 to 73 years) treated due to calcaneus fracture were included in the study. Twenty-nine patients underwent conservative treatment (group 1) and 25 patients underwent surgical treatment (group 2). The fractures were classified according to Sanders. At the final follow-up, patients' Bohler's angle, The American Orthopedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Score and Foot Function Index (FFI) were used to evaluate their radiological, clinical and patient-reported outcomes. Postoperative complications were also noted. RESULTS: The fracture was at the right foot in 28 patients and the left foot in 26 patients. The mean follow-up duration was 41.1±23.2 months (range, 24 to 126 months). No statistically significant differences were found between the groups in terms of gender, fracture side, mean age, or follow-up duration (p=0.951, p=0.571, p=0.326, and p=0.620, respectively). According to Sanders classification, 18 patients were type 2 and 11 patients were type 3 in group 1, while 11 patients were type 2 and 14 patients were type 3 in group 2. However, there was no statistically significant difference between the groups in terms of the type of the fracture (p=0.184). On the other hand, the outcomes were significantly better for group 2 compared to group 1 in terms of the Bohler's angle, AOFAS and FFI scores (p=0.004, p=0.003 and p=0.006, respectively). In group 1, subtalar arthritis developed in three patients. In group 2, wound healing problems and superficial infection developed in three patients, while subtalar arthritis developed in two patients. CONCLUSION: Surgical treatment is more effective in intra-articular calcaneus fractures compared to conservative treatment according to clinical, radiological and patient-reported outcomes. In addition, wound problems should be considered in surgical management.

Ultrasonography or direct radiography? A comparison of two techniques to detect dorsal screw penetration after volar plate fixation.

BACKGROUND: Complications related to extensor tendons have begun to increase with the use of volar plates in the treatment of distal radius fractures. In this study, we aimed to compare four-plane radiography and ultrasonography in the evaluation of dorsal cortex screw penetration following volar plate fixation. METHODS: We recruited 47 patients (33 males, 14 females, mean age 37.4 years; range 18-58 years). To evaluate dorsal screw penetration in all patients, we performed radiographs at 45° pronation, 45° supination and obtained dorsal tangential graphs at maximum palmar flexion, and a wrist lateral radiograph. Wrist ultrasonography was performed in all patients. RESULTS: Dorsal screw penetration was detected in 12 of the 47 patients undergoing VLP application. While there was > 2 mm screw penetration in seven patients, there was < 2 mm screw penetration in five patients. On four-plane radiographs, screw penetration > 2 mm was detected in seven patients and screw penetration < 2 mm was detected in two patients. On four-plane radiography, dorsal screw penetration was not detected in three out of five patients, who were shown to have < 2 mm screw penetration by ultrasonography. In addition to perioperative four-plane radiographs are also required to detect dorsal cortex penetration in patients undergoing VLP due to distal radius fracture. However, the detection of screw penetrations < 2 mm is more likely with ultrasonography compared to four-plane radiography. CONCLUSION: We recommend that dorsal cortex screw penetration should be evaluated with perioperative ultrasonography. TRIAL REGISTRATION: Research Registry, researchregistry3344 , Registered 10 January 2017.